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[IDD #VJN-743814]: GEMPAK
- Subject: [IDD #VJN-743814]: GEMPAK
- Date: Thu, 09 Aug 2007 18:10:40 -0600
Hi Massoud,
Sorry for the late reply, but I am hosting a McIDAS training workshop this week,
and am reading email/answering support infrequently...
re:
> So, the actual grid size of the Super National IR composite is
> 1008x1536,
Yes, here is an IMGLIST listing from McIDAS:
IMGLIST GINICOMP/GSN8KIR FORM=ALL
Image file directory listing for:GINICOMP/GSN8KIR
Pos Satellite/ Date Time Center Res (km) Image_Size
sensor Lat Lon Lat Lon
--- ------------- ------------ -------- ---- ---- ----- ----- ------------
76 G-11 IMG 9 AUG 07221 23:30:15 50 105
Band: 4 10.7 um IR Surface/Cloud-top Temp 7.49 7.49 1008 x 1536
proj: 0 created: 2007221 234323 memo: GINI:: Sat 14 SecID 9 ChID 4
type:PRD cal type:BRIT
offsets: data= 1280 navigation= 256 calibration= 768 auxiliary= 0
doc length: 0 cal length: 0 lev length: 0 PREFIX= 0
valcod: 0 zcor: 0 avg-smp: A
start yyddd: 2007221 start time:233015 start scan: 0
lcor: 1 ecor: 1 bytes per pixel: 1 ss: 76
Resolution Factors (base=1): Line= 8.0 Element= 8.0
IMGLIST: done
> which covers the Arctic, Canada, U.S., parts of Mexico and
> parts of the eastern Pacific and western Atlantic.
Yes, I have attached a GIF that shows the coverage of the product.
> Since I'm interested
> in mapping out CONUS,
I am not quite sure what you mean by "mapping out CONUS".
> then the gird size would be 800x1000. However, I'm
> not sure what are the (x,y) values for the outside corner edges for
> CONUS. Any insights?
I think that 'CONUS' is a loosely used term, meaning that there is no
exact definition for the latitude and longitude bounds for 'CONUS'.
If you know the latitude and longitude bounds you want, then translating
into the line,element pairs that define the region in the NOAAPORT Super
National composite would be straightforward.
Cheers,
Tom
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Ticket Details
===================
Ticket ID: VJN-743814
Department: Support IDD
Priority: High
Status: Closed